Home / 12,520.67-18,787.48-5,505.60

Finding the Fourth Proportional to 12,520.67, 18,787.48 and 5,505.60

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Solution

The fourth proportional to 12,520.67, 18,787.48 and 5,505.60 is: 8,261.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.67 : 18,787.48 = 5,505.60 : x
  2. Step 2: Convert to fraction form
    12,520.67/18,787.48 = 5,505.60/x
  3. Step 3: Cross multiply
    12,520.67x = 18,787.48 × 5,505.60
  4. Step 4: Simplify right side
    12,520.67x = 103,436,322.36
  5. Step 5: Solve for x
    x = 103,436,322.36/12,520.67
  6. Step 6: Final answer
    x = 8,261.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.